Brain Foods: Eat This, Skip That

What's the single best brain food?

Fatty fish (salmon, sardines, mackerel). DHA and EPA omega-3s have the strongest evidence for brain health. 2-3 servings per week.

Are blueberries really a brain food?

Yes, with caveats. Anthocyanins in blueberries support cognitive function in older adults in observational and small intervention studies. Real effect, but modest. A serving most days is reasonable; expecting transformation is not.

Foods With Real Evidence

• Fatty fish (salmon, sardines, mackerel) - DHA omega-3, strongest evidence
• Blueberries and other dark berries - anthocyanins, modest benefit
• Leafy greens (spinach, kale) - folate, lutein, vitamin K
• Walnuts - ALA omega-3, polyphenols
• Olive oil (extra virgin) - polyphenols, anti-inflammatory fats
• Dark chocolate (80%+) - flavanols, modest cognitive effect
• Green tea - L-theanine, EGCG, calm-alert state

Mostly Marketing

• "Brain-boosting" supplement gummies - low doses, no quality control
• Coconut oil for cognition - was hyped, evidence didn't pan out
• Most "nootropic stack" supplements - underdosed for the claims made
• Maca, ashwagandha as brain foods - they have effects, but not specifically brain-enhancing

The MIND Diet Pattern

Not a single food but a pattern: Mediterranean diet + DASH for brain health. Observational studies link adherence to slower cognitive decline. Simple version: olive oil, fatty fish 2-3x/week, leafy greens daily, berries most days, nuts, legumes, whole grains. Skip the refined-carb / fast-food side. This is the highest-leverage nutrition intervention for brain health.